Fixes tree for single tree sections, fixes creating a user group so you can select default permissions

src/Umbraco.Web.UI/Umbraco.Web.UI.csproj

@@ -573,7 +573,6 @@
     <Content Include="Umbraco\Developer\Packages\installer.aspx" />
     <Content Include="Umbraco\Logout.aspx" />
     <Content Include="Umbraco\umbraco.aspx" />
-    <Content Include="Umbraco\Users\EditUserGroup.aspx" />
     <Content Include="Umbraco_Client\Application\JQuery\jquery.unobtrusive-ajax.min.js" />
     <Content Include="Umbraco_Client\IconPicker\iconpicker.js" />
     <Compile Include="Umbraco\umbraco.aspx.cs">
@@ -583,13 +582,6 @@
     <Compile Include="Umbraco\umbraco.aspx.designer.cs">
       <DependentUpon>umbraco.aspx</DependentUpon>
     </Compile>
-    <Compile Include="Umbraco\Users\EditUser.aspx.cs">
-      <DependentUpon>EditUser.aspx</DependentUpon>
-      <SubType>ASPXCodeBehind</SubType>
-    </Compile>
-    <Compile Include="Umbraco\Users\EditUser.aspx.designer.cs">
-      <DependentUpon>EditUser.aspx</DependentUpon>
-    </Compile>
     <Content Include="Config\Splashes\booting.aspx" />
     <Content Include="Config\Splashes\noNodes.aspx" />
     <Content Include="Umbraco\Dashboard\UserControlProxy.aspx" />
@@ -1011,10 +1003,6 @@
     <None Include="Umbraco\Scripting\Templates\Rb\SubpagesAsThumnbnails.rb" />
     <None Include="Umbraco\Scripting\Templates\Rb\SubpagesFromAChangeableSource.rb" />
     <None Include="Umbraco\Scripting\Templates\Rb\SubpagesFromCurrentPage.rb" />
-    <Content Include="Umbraco\Users\NodePermissions.ascx" />
-    <Content Include="Umbraco\Users\PermissionEditor.aspx" />
-    <Content Include="Umbraco\Users\PermissionsEditor.js" />
-    <Content Include="Umbraco\Users\PermissionsHandler.asmx" />
     <Content Include="Umbraco\Webservices\CheckForUpgrade.asmx" />
     <Content Include="Umbraco\Xslt\searchResult.xslt" />
     <Content Include="Umbraco\Xslt\Templates\RelatedLinks.xslt" />
@@ -1068,7 +1056,6 @@
     <Content Include="Umbraco\Dialogs\sort.aspx" />
     <Content Include="Umbraco\tree.aspx" />
     <Content Include="Umbraco\treeInit.aspx" />
-    <Content Include="Umbraco\Users\EditUser.aspx" />
     <!--<Content Include="Umbraco\users\PermissionEditor.aspx" />-->
     <Content Include="Umbraco\Webservices\ajax.js" />
     <Content Include="Umbraco\Webservices\CacheRefresher.asmx">

src/Umbraco.Web/Editors/UserGroupsController.cs

@@ -39,7 +39,7 @@ namespace Umbraco.Web.Editors
         /// <returns></returns>
         public UserGroupDisplay GetEmptyUserGroup()
         {
-            return new UserGroupDisplay();
+            return Mapper.Map<UserGroupDisplay>(new UserGroup());
         }
 
         /// <summary>

src/Umbraco.Web/Models/Mapping/PermissionsResolver.cs

@@ -46,7 +46,7 @@ namespace Umbraco.Web.Models.Mapping
                 : attribute.Name;
             result.Description = _textService.Localize(String.Format("actionDescriptions/{0}", action.Alias));
             result.Icon = action.Icon;
-            result.Checked = source.Permissions.Contains(action.Letter.ToString(CultureInfo.InvariantCulture));
+            result.Checked = source.Permissions != null && source.Permissions.Contains(action.Letter.ToString(CultureInfo.InvariantCulture));
             result.PermissionCode = action.Letter.ToString(CultureInfo.InvariantCulture);
             return result;
         }

src/Umbraco.Web/Security/WebSecurity.cs

@@ -30,7 +30,7 @@ namespace Umbraco.Web.Security
         public WebSecurity(HttpContextBase httpContext, ApplicationContext applicationContext)
         {
             _httpContext = httpContext;
-            _applicationContext = applicationContext;
+            _applicationContext = applicationContext;            
         }
         
         /// <summary>

src/Umbraco.Web/Trees/ApplicationTreeController.cs

@@ -42,7 +42,7 @@ namespace Umbraco.Web.Trees
             //find all tree definitions that have the current application alias
             var appTrees = ApplicationContext.Current.Services.ApplicationTreeService.GetApplicationTrees(application, onlyInitialized).ToArray();
 
-            if (appTrees.Count() == 1 || string.IsNullOrEmpty(tree) == false )
+            if (string.IsNullOrEmpty(tree) == false || appTrees.Length == 1)
             {
                 var apptree = string.IsNullOrEmpty(tree) == false 
                     ? appTrees.SingleOrDefault(x => x.Alias == tree)
@@ -55,11 +55,12 @@ namespace Umbraco.Web.Trees
                     Constants.System.Root.ToString(CultureInfo.InvariantCulture),
                     queryStrings, 
                     application);
-
-                return result;
+
+                //this will be null if it cannot convert to ta single root section
+                if (result != null)
+                    return result;
             }
 
-
             var collection = new TreeNodeCollection();
             foreach (var apptree in appTrees)
             {
@@ -107,6 +108,7 @@ namespace Umbraco.Web.Trees
         /// <param name="configTree"></param>
         /// <param name="id"></param>
         /// <param name="queryStrings"></param>
+        /// <param name="application"></param>
         /// <returns></returns>
         private async Task<SectionRootNode> GetRootForSingleAppTree(ApplicationTree configTree, string id, FormDataCollection queryStrings, string application)
         {
@@ -121,6 +123,16 @@ namespace Umbraco.Web.Trees
                     //This should really never happen if we've successfully got the children above.
                     throw new InvalidOperationException("Could not create root node for tree " + configTree.Alias);
                 }
+
+                //if the root node has a route path, we cannot create a single root section because by specifying the route path this would
+                //override the dashboard route and that means there can be no dashboard for that section which is a breaking change.
+                if (rootNode.Result.RoutePath.IsNullOrWhiteSpace() == false 
+                    && rootNode.Result.RoutePath != "#" 
+                    && rootNode.Result.RoutePath != application)
+                {
+                    //null indicates this cannot be converted
+                    return null;
+                }
 
                 var sectionRoot = SectionRootNode.CreateSingleTreeSectionRoot(
                     rootId, 
@@ -128,6 +140,10 @@ namespace Umbraco.Web.Trees
                     rootNode.Result.MenuUrl, 
                     rootNode.Result.Name,
                     byControllerAttempt.Result);
+
+                //This can't be done currently because the root will default to routing to a dashboard and if we disable dashboards for a section
+                //that is really considered a breaking change. See above.
+                //sectionRoot.RoutePath = rootNode.Result.RoutePath;
 
                 foreach (var d in rootNode.Result.AdditionalData)
                 {